Ask.fm - Curious? Just ask! Openly or anonymously.
Bond - A simple app that reminds you to keep in touch with people
Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.
Thankster - Automagically send hand written cards
Tellonym - Tellonym is the most honest place on the internet.
Thankbot - Drive more business with handwritten notes